Extract ExternalLink module

lib/music_library/artists.ex

@@ -162,23 +162,6 @@ defmodule MusicLibrary.Artists do
     |> Repo.update()
   end
 
-  @external_link_patterns %{
-    "ProgArchives" => "progarchives.com"
-  }
-
-  def external_links(artist_info) do
-    Enum.reduce(@external_link_patterns, [], fn {name, pattern}, acc ->
-      case ArtistInfo.relation_urls(artist_info, pattern) do
-        [] ->
-          acc
-
-        [url | _rest] ->
-          [%{name: name, url: url} | acc]
-      end
-    end)
-  end
-
-
   defp get_collected_artist_ids do
     q =
       from ar in ArtistRecord,